Thanks for all the replies. After further consideration, Aruba's out because we feel its roughly the same of what we can find here at home.

Nailed out the fall foilage, having had that experience together before.

Narrowed it down to D-world and D-land; though the hotel rates at D-world are mind-blowing for our four night stay. You all have convinced me that WDW is the place to be... but to save on costs (we have a lot lined up together this fall), I think we might need to go to D-land where we can price out hotels at $99/night (or less)...